Re: [PATCH] Implement fast hash-collision detection

From: Jeff King <peff@peff.net>
Date: Nov 29, 2011, 10:29 UTC
Message-ID: <20111129102929.GA28024@sigill.intra.peff.net>
In-Reply-To: <CACBZZX59PiO0GGfPg=Gn0h_yWFnAMxmtDtecv9Yd_Pu8Jz0gzg@mail.gmail.com>

On Tue, Nov 29, 2011 at 11:24:18AM +0100, Ævar Arnfjörð Bjarmason wrote:

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> On Tue, Nov 29, 2011 at 10:07, Jeff King <peff@peff.net> wrote:
> 
> > However, it may be of interest that the Sun is expected to burn out in a
> > mere 10^10 years[1].
> 
> Off topic, but it's a a lot sooner than that. The total age of the sun
> is is around 10^10 (10 billion) years, but we're already ~4.6 billion
> years along that line.

Yeah, I checked Wikipedia, but rounded up for simplicity. I did use 5 billion for my fun fact at the end of the email, which is close to accurate.

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> However the Sun is currently in a stage of gradual heating until it
> turns into a red giant in ~5 billion years. In around 500 million
> years the earth will be uninhabitable as we know it, and in around 1
> billion years the surface will be hot enough to have boiled all the
> oceans. In other words the earth in a billion years will probably look
> similar to how Venus looks now.

Good point. If we want an accidental collision in the next 500 million years, we'd better step up the pace of development!

-Peff